Smelly CAt or exhaust

[Notorious_V.I.C]

Well i have had the ghl full dp on for a while and a week or more ago whenever i would do hard driving i.e. redline or higher then 5K And keep driving for a while or just stop somewhere I would smell some kind of sulfer...Has my high-flow cat gone bad?

How could it have gone bad??

ANy comments or help, can provide more info if needed.

[orng1]

How long have you had it now, what other mods are on the car? Any EMS AFC of any type?

[Striker187]

you can smell the sulfur from mine as well. you should be fine. cel isn't on right?

[Notorious_V.I.C]

I've had it on for a month or two can't remember bought it from a forum member. No AFC or enigne tuning. Just the full 3 inch GHL and 3 inch C/B and forge BOV. thats about it. for now...

and no cell, i wonder why it could be?

[byohndspeed]

it comes from the egt's beeing to high(i think) mine does it also, but only when i beat on it at high rpm. if you do it to much, i would think you would fry the cat.

[Mutmatt]

i've had this happen on stock exaust

[Notorious_V.I.C]

so the solution would be don't beat on the car hard...a lot

[mspHtown]

i have the vibrant exhaust and when i get on it it smells awful like sulfur. i dont remember the stock exhaust having this smell... possibly becuase it replaces the 2 cats with a high flow cat.

[Turtle of Time]

actually its a bad tank of gas, especially if it smells like rotten eggs.

[MSP#735]

smelly cat, smelllyyyy cat, what are they feeding you!?!?!?

[Striker187]

i imagine some fuel tuning would help some....you know how rich these cars run.

[Notorious_V.I.C]

smelly cat, smelllyyyy cat, what are they feeding you!?!?!?

shity or bad 91 ocatane...haha

I'm switching to 76 or Chevron or Shell...most likely 76.
And yes some tuning will be good, which is my plan after I get done with my FMIC ordered and installed, the DSM AFC and 440-550 CC injectors will go in.
After that some cosmestics...yea she is gonna need some make-up...lol
and some suspension somewhere in there..
me at HIN-------->(first) in 2 to 3 months?! (thumb)

[Turtle of Time]

I've noticed that my last tank of gas (pumped at citgo) was giving me the sulfur/rotten egg smell...

dont think i had that problem with shell

[evilmonkeyMSP]

its because you have a highflow cat. Its not catching all the things that it did w/ the full cat set up. I Have no cats & smell this all day long...god forgid you are on a motorcycle behind me LOL. Its nothing to worry about...the smell has always been there, just VERY noticable due to the highflow cat

[-pixy-]

smelly cat, smelllyyyy cat, what are they feeding you!?!?!?
lol, that was first thing that came to mind

[evilmonkeyMSP]

hmmmmm typing in "smelly cat" into Yahoo images search brought up something ...interesting.....

http://www.bucketsareforme.com/Images/cat.gif

[-pixy-]

hmmmmm typing in "smelly cat" into Yahoo images search brought up something ...interesting.....

http://www.bucketsareforme.com/Images/cat.gif

lol, looks like something i would draw :p

[evilmonkeyMSP]

lmao true

[FlyinMSP]

My first Hi-flow cat (Magnaflow) on a 1.5" midpipe (the rest was OEM) never smelled in a year and half. My second hi-flow (Vibrant on 2.5" mdpipe also) with a 2.5" catback (3" axelback) smelled everytime I revved the engine hard (event for little time) Things got really hot under there as well. The Thermo-Tec tape melted by the bung for the O2 sensor (just after the cat).
Now I'm back with the stock dual cats (the rest of the line is still the same for now) and it doesn't smell anymore

[smo0f]

you put 91 octane in the msp?


shity or bad 91 ocatane...haha

I'm switching to 76 or Chevron or Shell...most likely 76.
And yes some tuning will be good, which is my plan after I get done with my FMIC ordered and installed, the DSM AFC and 440-550 CC injectors will go in.
After that some cosmestics...yea she is gonna need some make-up...lol
and some suspension somewhere in there..
me at HIN-------->(first) in 2 to 3 months?! (thumb)

[Stormtrooper77]

you put 91 octane in the msp?

I think you're supposed to...91 and above anyway.

[Striker187]

you put 91 octane in the msp?

kinda sucks to be in cali....that's the highest octane they get :(

[Notorious_V.I.C]

Yea anything lower then 91 your car will do this ---->(blarf) and the power

Sadly I'm stuck with 91 at least I have acess to 110 octan gas but that is when i go to the drag strip if I ever do...and I'll go on a half tank or less, then i'll put some high octane in there. AFC will hopefully help it out..

Lol....and that drawing is funny too..